agenttesla | 8160d7520a2f9630dc0b3773b07d2a9fdf937f2b3b722980c96dfbc4db4a85a7

General

Target
nwamafour.exe
Size 24KB
Sample210427-emaf5jg44e
SHA256 8160d7520a2f9630dc0b3773b07d2a9fdf937f2b3b722980c96dfbc4db4a85a7
MD5 2539fb238bc5bf7d2bdd0b475e1b6af0
SHA1 25cbf70ad2aab4301cb53545e39ab1c23f0c12f8
SHA512 18bdd424e87c691401d4a27685fe018687081ce80aec780f925cb87e5615f4f106e9c01a065776185de543806688ce52ef924d7ee163ff71dbb6ad46a8d041e7
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
dell-tv.tk
Port
587
Username
[email protected]
Password
7213575aceACE@#$

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 3 IoCs

resource	yara_rule
behavioral2/memory/2840-122-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/2840-123-0x000000000043777E-mapping.dmp	family_agenttesla
behavioral2/memory/2840-128-0x0000000004CD0000-0x00000000051CE000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	nwamafour.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of NtSetInformationThreadHideFromDebugger 15 IoCs

pid	Process
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2204 set thread context of 2840	2204	nwamafour.exe	81

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2284	2204	WerFault.exe	30

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1104	timeout.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2204	nwamafour.exe
2204	nwamafour.exe
2204	nwamafour.exe
2840	nwamafour.exe
2840	nwamafour.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2204	nwamafour.exe
Token: SeDebugPrivilege	2840	nwamafour.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2840	nwamafour.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 3312	2204	nwamafour.exe	76
PID 2204 wrote to memory of 3312	2204	nwamafour.exe	76
PID 2204 wrote to memory of 3312	2204	nwamafour.exe	76
PID 3312 wrote to memory of 1104	3312	cmd.exe	78
PID 3312 wrote to memory of 1104	3312	cmd.exe	78
PID 3312 wrote to memory of 1104	3312	cmd.exe	78
PID 2204 wrote to memory of 2840	2204	nwamafour.exe	81
PID 2204 wrote to memory of 2840	2204	nwamafour.exe	81
PID 2204 wrote to memory of 2840	2204	nwamafour.exe	81
PID 2204 wrote to memory of 2840	2204	nwamafour.exe	81
PID 2204 wrote to memory of 2840	2204	nwamafour.exe	81
PID 2204 wrote to memory of 2840	2204	nwamafour.exe	81
PID 2204 wrote to memory of 2840	2204	nwamafour.exe	81
PID 2204 wrote to memory of 2840	2204	nwamafour.exe	81

C:\Users\Admin\AppData\Local\Temp\nwamafour.exe
"C:\Users\Admin\AppData\Local\Temp\nwamafour.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3312
- - C:\Windows\SysWOW64\timeout.exe
    timeout 1
    3⤵
    - Delays execution with timeout.exe
    PID:1104
- C:\Users\Admin\AppData\Local\Temp\nwamafour.exe
  "C:\Users\Admin\AppData\Local\Temp\nwamafour.exe"
  2⤵
  - Drops file in Drivers directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2204 -s 1876
  2⤵
  - Program crash
  PID:2284

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2204-118-0x0000000004D30000-0x000000000522E000-memory.dmp

Download

memory/2204-117-0x0000000004DD0000-0x0000000004DD1000-memory.dmp

Download

memory/2204-114-0x0000000000560000-0x0000000000561000-memory.dmp

Download

memory/2204-119-0x0000000004850000-0x00000000048A4000-memory.dmp

Download

memory/2204-116-0x0000000005230000-0x0000000005231000-memory.dmp

Download

memory/2840-122-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/2840-128-0x0000000004CD0000-0x00000000051CE000-memory.dmp

Download

memory/2840-129-0x0000000005180000-0x0000000005181000-memory.dmp

Download

memory/2840-130-0x0000000005A30000-0x0000000005A31000-memory.dmp

Download

memory/2840-131-0x0000000005E10000-0x0000000005E11000-memory.dmp

Download

memory/2840-132-0x0000000000C20000-0x0000000000C21000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads